Hook for crane-sling chains



June 2%, H923. 1,459,815

v W. J. BEMIS HOOK FOR CRANE SLING CHAINS Filed Sept. 15, 1921 Patented June 26,

1 meat WILLIAM J'. BEIVIIS, OF SCHENECTADY,- NEW YORK.

HOOK FOR GRANE-SLING CHAINS.

Application filed September 15, 1921. Serial No. 500,863.

T 0 (all 20 ham it may concern.

Be it known that I, WILLIAM J. BnMIs, of Schenectady, in the county of Schenectady and State of New York, have invented a cer 5 tain new and useful Improvement in Hooks for Crane-tilingChains, of which improve ment the following is a specification.

My invention relates to hooks for suspend ing loads on the sling chains of cranes, and its object is to provide a hook of such character as will prevent the slipping off of the hook from a load, or its dislodgement when engaged with a ring, and will reduce liability to injury to operators when hooking on loads.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawing: F i gur'e 1 is a side view, in elevation, of a hook for crane 20 sling chains, illustrating an embodiment of my invention; Fig. 2, a view taken at a right angle to Fig. l; and, Figs. 3 and at, transverse sections, on the lines a a and 7) 6, respectively, of Fig. 1.

In the desoriptively to the specific embodiment thereof which is herein exemplified, I provide a hook having a body, 1, which is of the general U form of Ordinary practice, and has an eye, 1, at the extremity of its longer arm, for connection to a crane sling chain. An inwardly extending nose or knob, l", the periphery of which is continuously rounded by being formed in two reversely turned shorter arm of the hook, the inward projection of said nose or knob correspondingly when hooked practice of my invention, referring to open up the hook due to curves, is formed on the upper end of the formed on each .veniently grasped by the operator at a safe distance from the load to beengaged, when hooking on the load. i

The inwardly projecting knob or nose prevents the end of the shorter arm ofthe hook from becoming engaged with small holes or depressions in the articles to be raised, such as bolt holes in castings, whichengagement would cause theload to be carried chiefly by the point or upper end ofthe shorter arm, and any holeor depression in the article to be lifted, which is sufliciently large toadmit the knob, would not engage with it, or prevent the article from dropping to the bot tom of the hook, the strength of which would be such as would sustainit. The inwardly extending knob will also prevent the hook 011". from loads, or dislodging up into the ring at the top of the sling, which sometimes happens and causes the hook to fall upon men working below, andby reason of the inward projection at the point, the bending moment, when a load is carried thereon, is reduced, with a corresponding reduction of the tendency overloading. The finger grip grooveson the sides of the hook enable the operator to safely hold it, which he must do when the crane takes u the slack inthe chain, and with hooks of the ordinary type, his fingers are endangered in so doing.

I claim as my invention and desire to se cure by Letters Patent: i

A crane sling hook, having the free end of its bill shaped to form a rounded knob projecting inwardly only, whereby danger of the load becoming hung on the end of the bill and of its slipping off therefrom is obviated.

from slipping WM. J. BEMIS.

J. L. STEELE. 

